from haystack import indexes
from .models import Book
class BookIndex(indexes.SearchIndex, indexes.Indexable):

    text = indexes.CharField(document=True, use_template=True)

    name = indexes.CharField(model_attr='name')
    publish = indexes.CharField(model_attr='publish')

    def get_model(self):
        """返回建立索引的模型类"""
        return Book
    def index_queryset(self, using=None):
        """返回要建立索引的数据查询集"""
        return self.get_model().objects.all()